一、前言 集材—50拖拉机后桥箱的断裂失效,是集材—50拖拉机断裂失效的主要零件。 在对G—1后桥箱进行伐区生产试验的基础上,又研制了G—2后桥箱,用于更替原来的后桥箱,由伊春市友好林业局机械修配厂配料铸造、加工制造。G—2后桥箱已装配于技术改造的车架上,其配合与装配完全符合设计技术要求。 I. INTRODUCTION Skid-50 tractor rear axle box failure failure is the main component of SKF-50 tractor failure. G-1 rear axle box in the cutting zone production test based on the development of the G-2 rear axle box, used to replace the original rear axle box, Yichun friendly Forestry Bureau machinery repair plant ingredients casting, processing manufacture. G-2 rear axle box has been assembled on the technical transformation of the frame, with the full compliance with the design and assembly with the technical requirements.